CVE-2026-31072

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-19. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.0%CVSS: 9.8Exploit: Elevated riskExposed services: Not assessed

A fixed version is listed under Patch Availability — apply it.

The JSONSerializer and CBORSerializer in APScheduler (all versions including 3.10.x and 4.0.0a5) are vulnerable to Remote Code Execution (RCE) via Insecure Deserialization. The unmarshal_object function allows for arbitrary class instantiation and state injection by dynamically importing modules and calling __setstate__ on any class available in the Python environment. An attacker can exploit this by submitting a specially crafted JSON or CBOR payload to an application using these serializers

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
EPSS PROB
1.0%
EPSS %ILE
61st
KEV
Not listed

Published

May 19, 2026

Last Modified

July 24, 2026

Advisory Details (5)

Auto-updated Oct 9, 2026
Fixed version listed under Patch Availability. Sources: redhat.
redhat
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31072.json
generic

CVE-2026-31072 · GitHub

https://gist.github.com/nedlir/11fb77f35a59cbba73392a086b02a9c6
redhat

2479907 – (CVE-2026-31072) CVE-2026-31072 apscheduler: APScheduler: Remote Code Execution via Insecure Deserialization

https://bugzilla.redhat.com/show_bug.cgi?id=2479907
redhatMentions a patch (unverified)

CVE-2026-31072 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-31072
generic

GitHub - agronholm/apscheduler: Task scheduling library for Python · GitHub

https://github.com/agronholm/apscheduler

Vendor Advisories for CVE-2026-31072(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
pipapscheduler—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
apscheduler4.0.0a1 ... 4.0.0a6 (6 versions)
  • 4.0.0a1 through 4.0.0a6: no fix on record
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 23× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 383 total refreshes for this CVE.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-09 20:07 UTCEPSS rescore
  3. 2026-10-08 17:12 UTCEPSS rescore
  4. 2026-10-07 23:47 UTCEPSS rescore
  5. 2026-10-06 15:17 UTCEPSS rescore
  6. 2026-10-05 17:42 UTCEPSS rescore
  7. 2026-10-04 23:22 UTCEPSS rescore
  8. 2026-10-03 14:25 UTCEPSS rescore
  9. 2026-10-01 19:49 UTCEPSS rescore
  10. 2026-09-30 15:03 UTCEPSS rescore
  11. 2026-09-28 13:51 UTCEPSS rescore
  12. 2026-09-26 15:58 UTCEPSS rescore
  13. 2026-09-26 00:26 UTCEPSS rescore
  14. 2026-09-20 20:15 UTCEPSS rescore
  15. 2026-09-20 20:15 UTCEPSS rescore
  16. 2026-09-18 19:28 UTCEPSS rescore
  17. 2026-09-18 19:27 UTCEPSS rescore
  18. 2026-09-17 19:30 UTCEPSS rescore
  19. 2026-09-16 14:08 UTCEPSS rescore
  20. 2026-09-16 05:15 UTCEPSS rescore
  21. 2026-09-13 16:47 UTCEPSS rescore
  22. 2026-09-12 15:01 UTCEPSS rescore
  23. 2026-09-11 14:52 UTCEPSS rescore
  24. 2026-09-10 09:34 UTCEPSS rescore
  25. 2026-09-08 22:00 UTCEPSS rescore
Show 75 more
  1. 2026-09-07 16:01 UTCEPSS rescore
  2. 2026-09-06 13:47 UTCEPSS rescore
  3. 2026-09-06 13:47 UTCEPSS rescore
  4. 2026-09-04 05:06 UTCEPSS rescore
  5. 2026-09-02 14:11 UTCEPSS rescore
  6. 2026-09-01 13:53 UTCEPSS rescore
  7. 2026-09-01 04:39 UTCEPSS rescore
  8. 2026-09-01 04:39 UTCEPSS rescore
  9. 2026-08-30 19:17 UTCEPSS rescore
  10. 2026-08-30 01:22 UTCEPSS rescore
  11. 2026-08-28 21:41 UTCEPSS rescore
  12. 2026-08-27 14:25 UTCEPSS rescore
  13. 2026-08-26 14:46 UTCEPSS rescore
  14. 2026-08-25 13:49 UTCEPSS rescore
  15. 2026-08-24 14:17 UTCEPSS rescore
  16. 2026-08-24 00:49 UTCGHSA enrichment
  17. 2026-08-23 20:53 UTCGHSA enrichment
  18. 2026-08-23 17:00 UTCEG score recompute
  19. 2026-08-23 17:00 UTCGHSA enrichment
  20. 2026-08-23 00:19 UTCEPSS rescore
  21. 2026-08-21 23:49 UTCEPSS rescore
  22. 2026-08-21 23:37 UTCEG score recompute
  23. 2026-08-21 23:37 UTCGHSA enrichment
  24. 2026-08-20 22:55 UTCEPSS rescore
  25. 2026-08-20 22:55 UTCEPSS rescore
  26. 2026-08-20 19:01 UTCEG score recompute
  27. 2026-08-20 19:01 UTCGHSA enrichment
  28. 2026-08-19 17:03 UTCEPSS rescore
  29. 2026-08-18 13:48 UTCEPSS rescore
  30. 2026-08-17 13:49 UTCEG score recompute
  31. 2026-08-17 13:49 UTCGHSA enrichment
  32. 2026-08-17 13:47 UTCEPSS rescore
  33. 2026-08-17 10:00 UTCGHSA enrichment
  34. 2026-08-16 16:59 UTCEG score recompute
  35. 2026-08-16 16:59 UTCGHSA enrichment
  36. 2026-08-16 14:56 UTCEPSS rescore
  37. 2026-08-16 11:13 UTCGHSA enrichment
  38. 2026-08-16 07:24 UTCGHSA enrichment
  39. 2026-08-16 03:34 UTCEG score recompute
  40. 2026-08-16 03:34 UTCGHSA enrichment
  41. 2026-08-16 02:14 UTCEPSS rescore
  42. 2026-08-15 01:39 UTCEG score recompute
  43. 2026-08-15 01:39 UTCGHSA enrichment
  44. 2026-08-15 01:30 UTCEPSS rescore
  45. 2026-08-14 21:49 UTCGHSA enrichment
  46. 2026-08-14 18:00 UTCGHSA enrichment
  47. 2026-08-14 13:35 UTCGHSA enrichment
  48. 2026-08-14 09:46 UTCGHSA enrichment
  49. 2026-08-14 05:56 UTCGHSA enrichment
  50. 2026-08-14 02:06 UTCEG score recompute
  51. 2026-08-14 02:06 UTCGHSA enrichment
  52. 2026-08-13 22:00 UTCEPSS rescore
  53. 2026-08-13 08:14 UTCGHSA enrichment
  54. 2026-08-13 03:18 UTCGHSA enrichment
  55. 2026-08-12 23:28 UTCGHSA enrichment
  56. 2026-08-12 19:39 UTCGHSA enrichment
  57. 2026-08-12 15:49 UTCEG score recompute
  58. 2026-08-12 15:49 UTCGHSA enrichment
  59. 2026-08-12 13:50 UTCEPSS rescore
  60. 2026-08-12 12:00 UTCGHSA enrichment
  61. 2026-08-11 22:37 UTCGHSA enrichment
  62. 2026-08-11 18:47 UTCGHSA enrichment
  63. 2026-08-11 13:53 UTCEG score recompute
  64. 2026-08-11 13:53 UTCGHSA enrichment
  65. 2026-08-11 08:17 UTCGHSA enrichment
  66. 2026-08-11 04:27 UTCGHSA enrichment
  67. 2026-08-11 00:38 UTCEG score recompute
  68. 2026-08-11 00:38 UTCGHSA enrichment
  69. 2026-08-11 00:00 UTCEPSS rescore
  70. 2026-08-10 12:08 UTCGHSA enrichment
  71. 2026-08-10 08:17 UTCGHSA enrichment
  72. 2026-08-10 04:27 UTCGHSA enrichment
  73. 2026-08-10 00:37 UTCGHSA enrichment
  74. 2026-08-09 20:47 UTCGHSA enrichment
  75. 2026-08-09 16:58 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-31072?
CVE-2026-31072 is a critical vulnerability published on May 19, 2026. The JSONSerializer and CBORSerializer in APScheduler (all versions including 3.10.x and 4.0.0a5) are vulnerable to Remote Code Execution (RCE) via Insecure Deserialization. The unmarshal_object function allows for arbitrary class instantiation and state injection by dynamically importing modules…
When was CVE-2026-31072 disclosed?
CVE-2026-31072 was first published on May 19, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-31072 actively exploited?
CVE-2026-31072 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.0% probability of exploitation in the next 30 days (61st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-31072?
CVE-2026-31072 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-31072?
A fixed version for CVE-2026-31072 is listed under Patch Availability on this page: update to the version listed for your package. The vendor advisories EchelonGraph has for CVE-2026-31072 are linked in the Vendor Advisories panel on this page.

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